The distribution of V in magmatic rocks is controlled primarily by spinel stability. Extensive previous experimental work at oxidized conditions on doped (V-rich) compositions has led to the recognition of the importance of temperature, oxygen fugacity, and spinel composition, but also left ambiguity with respect to the relative importance of these variables in controlling DV. One major uncerta...

The subsolidus phase relationships in the ZnO–InO1.5–SnO2 system were investigated at 12751C using X-ray diffraction. Each of the end members of the ternary diagram is a transparent conducting oxide. There are two substantial solid solutions in the ternary phase space, the bixbyite solid solution In2 2xZnxSnxO3 (x5 0–0.40), and the indium substituted zinc stannate spinel, Zn(2 x)Sn(1 x)In2xO4 (...

On the basis of the similarity between spinel and rocksalt structures, it is shown that some spinel oxides (e.g., MgCo2O4, etc) can be cathode materials for Mg rechargeable batteries around 150 °C. The Mg insertion into spinel lattices occurs via "intercalation and push-out" process to form a rocksalt phase in the spinel mother phase. For example, by utilizing the valence change from Co(III) to...

Introduction: Investigation of spectral anomalies in global data acquired with the Moon Mineralogy Mapper (M) [1] has revealed a new, unique, and unexpected spinel-rich lithology on the central nearside. These spinel-rich deposits are found only among the Sinus Aestuum pyroclastic/dark mantle deposits (DMD) and are notably absent from the adjacent Rima Bode DMD. While these deposits are spatial...

nowadays, magnesia carbon refractories are very important for the iron and steel industries. it is dueto their unique properties, such as low wet ability with melt iron and steel. therefore, it is importantto extend the life of the refractory. in this research, the effect of calcined alumina and nano carbon onmechanical strength and corrosion resistance against slag in magnesia carbon refractor...

High-entropy metal spinel oxide (HEO) is proved to be a promising oxygen evolution reaction (OER) catalyst with high catalytic performance and stability. A short routine synthesis process based on solution combustion was proposed prepare (Co0.25Ni0.25Mn0.25Zn0.25)Fe2O4 HEO in this work. During the process, products were rapidly synthesized melted due high-temperature reaction, then quickly crys...